The answer is A because I did this before
Answer:
331 g
Explanation:
Step 1: Write the balanced equation
N₂(g) + 3 H₂(g) → 2 NH₃(g)
Step 2: Calculate the moles corresponding to 400 g of ammonia
The molar mass of ammonia is 17.03 g/mol.
Step 3: Calculate the moles required of nitrogen
The molar ratio of N₂ to NH₃ is 1:2.
Step 4: Calculate the mass corresponding to 11.8 moles of nitrogen
The molar mass of nitrogen is 28.01 g/mol.
Endothermic means it absorb energy from surrounding and its sign is positive so when it absorb this energy the flask or the container become colder
Charcoal- it's black when you buy it, red when it's burning, and whitish greyish when it's all used up.
<span>a. the reactants to the surroundings.
That is because in an exothermic reaction, energy is being released. </span>